"The hyperinflated, worthless Marks became widely collected abroad. The Los Angeles Times estimated in 1924 that more of the decommissioned notes were spread about the United States than existed in Germany."

https://en.wikipedia.org/wiki/Hyperinflation_in_the_Weimar_R...

I bought one early in the bitcoin era when 1BTC was ~$1, probably spent over $3,000 at least in today's BTC or something.